C-4-fraction
[化] 碳四馏分
🧩 词语组成解析
🗣️ 情景例句
How do you feel about this?
你觉得呢？
Mother's darlings are but milksop heroes.
奶水泡出懦弱汉。
Modern machines can make the copy bigger or smaller, lighter or darker and copy onto both sides of the paper.
代机器可以放大、缩小、制作较亮的或较暗的复印件，也可以在纸的两面复印。